PLUGNUTS are hardened, threaded inserts designed to be pressed into ductile material to assure good fastening characteristics for a part or product. First cost is low--installation is inexpensive Once inserted, the PlugNut becomes a "self-clinching" preplaced nut; ideal for use in blind hard to reach locations and to improve fasten-ability for thin or soft materials such as steel, brass and aluminum.
Each PlugNut is made with a tapered, knurled projection--the large end which is greater in diameter than the hold in which the nut will be used. An annular groove separates the top of the projection from the underside of the head of the nut. When the nut is pressed into a mating hole, the wall material of the hole is radically displaced in an outward direction Displaced hole material flows into the knurls and groove to clinch the nut securely in place. This is accomplished without affecting flatness of component product material.
1. One side manual or power tool assembly
2. Firmly staked in place parallel to the material
3. Low profile of PlugNut uses shorter screw for same clamp load than either bolt and nut or recessed insert. No gaps in matching surfaces.
1. Two wrench assembly
2. Loose nut must be positioned and started. May cock or tilt.
3. Deformed assembly uses longer screw and allows gap between matching surface.
Two simple steps done with low-cost tooling--punch and anvil.
Drill or punch recommended hole size in product material. Place PlugNut on top of hole and locate in line with press punch and anvil.
Press nut into hole. Use sufficient pressure to properly seat head by slightly embedding the head a few thousands into the surface of the component material.
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